Formula:KLS:14.05:79

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\qHyperrphis 21 @ @ c q x - 1 , 0 c q q x t \qHyperrphis 11 @ @ c - 1 x c - 1 q q q t = n = 0 P n ( x ; c ; q ) ( c - 1 q ; q ) n t n \qHyperrphis 21 @ @ 𝑐 𝑞 superscript 𝑥 1 0 𝑐 𝑞 𝑞 𝑥 𝑡 \qHyperrphis 11 @ @ superscript 𝑐 1 𝑥 superscript 𝑐 1 𝑞 𝑞 𝑞 𝑡 superscript subscript 𝑛 0 big-q-Legendre-polynomial-P 𝑛 𝑥 𝑐 𝑞 q-Pochhammer-symbol superscript 𝑐 1 𝑞 𝑞 𝑛 superscript 𝑡 𝑛 {\displaystyle{\displaystyle{\displaystyle\qHyperrphis{2}{1}@@{cqx^{-1},0}{cq}% {q}{xt}\,\qHyperrphis{1}{1}@@{c^{-1}x}{c^{-1}q}{q}{qt}=\sum_{n=0}^{\infty}% \frac{P_{n}\!\left(x;c;q\right)}{\left(c^{-1}q;q\right)_{n}}t^{n}}}}

Proof

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Symbols List

ϕ s r subscript subscript italic-ϕ 𝑠 𝑟 {\displaystyle{\displaystyle{\displaystyle{{}_{r}\phi_{s}}}}}  : basic hypergeometric (or q 𝑞 {\displaystyle{\displaystyle{\displaystyle q}}} -hypergeometric) function : http://dlmf.nist.gov/17.4#E1
Σ Σ {\displaystyle{\displaystyle{\displaystyle\Sigma}}}  : sum : http://drmf.wmflabs.org/wiki/Definition:sum
P n subscript 𝑃 𝑛 {\displaystyle{\displaystyle{\displaystyle P_{n}}}}  : big q 𝑞 {\displaystyle{\displaystyle{\displaystyle q}}} -Legendre polynomial : http://drmf.wmflabs.org/wiki/Definition:bigqLegendre
( a ; q ) n subscript 𝑎 𝑞 𝑛 {\displaystyle{\displaystyle{\displaystyle(a;q)_{n}}}}  : q 𝑞 {\displaystyle{\displaystyle{\displaystyle q}}} -Pochhammer symbol : http://dlmf.nist.gov/5.18#i http://dlmf.nist.gov/17.2#SS1.p1

Bibliography

Equation in Section 14.5 of KLS.

URL links

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